package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.xmlbeans.impl.xb.xsdschema.Public;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;

@Service
@Slf4j
public class UserServiceImp implements UserService {
    public  static final  String WX_len="https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    public WeChatProperties weChatProperties;
    @Autowired
    UserMapper userMapper;

    @Override


    public User wxLogin(UserLoginDTO userLoginDTO) {
      String openid=getOpenid(userLoginDTO.getCode());
        if (openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);

        }
        //判断openid是否为空
        //判断当前用户是不是一个新用户，是的话存储openid;
        User user = userMapper.getByOpenId(openid);
        //如果是新用户，自动注册
        if (user==null){
            user=User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.insert(user);
        }

        //返回这个用户对象
        return user;
    }
    private String getOpenid(String  code){
        //调用微信接口服务，获得我们的OPENidb
        HashMap<String, String> map = new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code", code);
        map.put("grant_type","authorization_code");
        String json=HttpClientUtil.doGet(WX_len,map);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        return openid;
    }
}
